S-N Fatigue Behavior of Anodized 7050-T7451 Produced in Different Electrolytes

Lee, Eungyeong; Jeong, Yooin; Kim, Sangshik

doi:10.1007/s11661-011-1044-x

Cited by 10 publications

(15 citation statements)

References 21 publications

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“…The decrease in fatigue durability, caused by the anodic coating on aluminum alloys, is mentioned at several research studies. This fatigue susceptibility is attributed to the brittle and porous nature of the anodizing oxide layer . Moreover, the anodized oxide film is vulnerable to microcracking.…”

Section: Resultsmentioning

confidence: 99%

“…This fatigue susceptibility is attributed to the brittle and porous nature of the anodizing oxide layer. 7,[19][20][21][22][23] Moreover, the anodized oxide film is vulnerable to microcracking. The variations in thermal expansion coefficients among the oxide layer and the aluminum substrate might be responsible for these microcracks that are formed on the oxide film.…”

Section: Corrosion-fatigue Behaviormentioning

confidence: 99%

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A study on corrosion‐fatigue behavior of AA7075‐T651 subjected to different surface modification treatments

Michailidis

Stergioudi

Ragousis

et al. 2019

Fatigue Fract Eng Mat Struct

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Two corrosive media were used (3.5 wt% NaCl aqueous solution and distilled water) to examine the corrosion‐fatigue behavior of AA 7075‐T651, subjected to various surface modifications (wire‐EDM, blasting, and anodizing). An in‐situ corrosion‐fatigue device was used to test the corrosion‐fatigue durability. The apparatus is able to generate cyclic loads within a corrosive solution. The mechanical loading is simulated with the aid of finite element method (FEM). At both corrosive environments, a prolongation of the corrosion‐fatigue life was achieved by the blasting procedure, compared with the as‐machined specimens under same conditions. Anodizing had a deleterious impact in all examined cases.

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Section: Resultsmentioning

confidence: 99%

Section: Corrosion-fatigue Behaviormentioning

confidence: 99%

A study on corrosion‐fatigue behavior of AA7075‐T651 subjected to different surface modification treatments

Michailidis

Stergioudi

Ragousis

et al. 2019

Fatigue Fract Eng Mat Struct

View full text Add to dashboard Cite

show abstract

“…The thicker the oxide film is, the highest is the loss of fatigue strength. A thicker oxide film provides larger areas for crack growth and coalescence, as well as a higher probability of oxide defects [108,112]. Thus, the anodic layer thickness is limited by the fatigue properties.…”

Section: Fatiguementioning

confidence: 99%

“…The pre-treatment steps, in particular alkaline etching and acidic pickling (introduced in Sections 5.1.2 and 5.1.3), already have a detrimental effect on fatigue life. During these steps, the dissolution and oxidation of intermetallic phases leads to the formation of pits that serve as crack nucleation areas [112,113]. In addition, chromic acid anodizing (CAA) and tartaric sulfuric acid anodizing (TSA) have been shown to be less deleterious for fatigue properties than sulfuric acid anodizing (SAA) [112].…”

Section: Fatiguementioning

confidence: 99%

A Review on Anodizing of Aerospace Aluminum Alloys for Corrosion Protection

et al. 2020

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Aluminum alloys used for aerospace applications provide good strength to weight ratio at a reasonable cost but exhibit only limited corrosion resistance. Therefore, a durable and effective corrosion protection system is required to fulfil structural integrity. Typically, an aerospace corrosion protection system consists of a multi-layered scheme employing an anodic oxide with good barrier properties and a porous surface, a corrosion inhibited organic primer, and an organic topcoat. The present review covers published research on the anodic oxide protection layer principles and requirements for aerospace application, the effect of the anodizing process parameters, as well as the importance of process steps taking place before and after anodizing. Moreover, the challenges of chromic acid anodizing (CAA) substitution are discussed and tartaric-sulfuric acid anodizing (TSA) is especially highlighted among the environmentally friendly alternatives.

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“…The reduction in fatigue resistance when employing an anodic coating on aluminum alloys is reported by numerus studies. The brittle and porous nature of the anodizing layer is highly responsible for this fatigue susceptibility [8][9][10][11][12]. Additionally, the anodized layer is susceptible to microcracking.…”

Section: Corrosion Fatigue Behaviourmentioning

confidence: 99%

The footprint of surface modification treatments on the corrosion-fatigue of AA7075-T651

et al. 2018

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Different manufacturing and surface modification treatments distinctively affect the surface characteristics and microstructure of the workpiece, having a different impact on their effective life-span. The corrosion-fatigue behavior of as-machined (wire-EDM), blasted and anodized aluminum alloy 7075-T651 was investigated using 3.5wt% NaCl aqueous solution and distilled water as corrosive media. An in-situ corrosion-fatigue device capable of producing cyclic loads in a corrosive solution was employed, coupled with FEM analysis. Blasting process offered a prolongation of the corrosion-fatigue life-span in both corrosive media, when compared to the as-machined samples under identical conditions. Anodizing had a deleterious effect in all the examined cases.

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S-N Fatigue Behavior of Anodized 7050-T7451 Produced in Different Electrolytes

Cited by 10 publications

References 21 publications

A study on corrosion‐fatigue behavior of AA7075‐T651 subjected to different surface modification treatments

A study on corrosion‐fatigue behavior of AA7075‐T651 subjected to different surface modification treatments

A Review on Anodizing of Aerospace Aluminum Alloys for Corrosion Protection

The footprint of surface modification treatments on the corrosion-fatigue of AA7075-T651

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